<template>
    <view :class="`wd-count-down ${customClass}`" :style="customStyle">
        <slot :current="current" v-if="$slots.default" />
        <block v-else>{{ timeText }}</block>
    </view>
</template>

<script lang="ts">
export default {
    name: 'wd-count-down',
    options: {
        virtualHost: true,
        addGlobalClass: true,
        styleIsolation: 'shared',
    },
}
</script>

<script setup lang="ts">
import { watch, computed, onMounted } from 'vue'
import { parseFormat } from './utils'
import { useCountDown } from '../composables/useCountDown'
import { countDownProps, type CountDownExpose } from './types'

const props = defineProps(countDownProps)

const emit = defineEmits(['change', 'finish'])

const { start, pause, reset, current } = useCountDown({
    time: props.time,
    millisecond: props.millisecond,
    onChange: (current) => emit('change', current),
    onFinish: () => emit('finish'),
})

const timeText = computed(() => parseFormat(props.format, current.value))

const resetTime = () => {
    reset(props.time)
    if (props.autoStart) {
        start()
    }
}

watch(() => props.time, resetTime, { immediate: false })

onMounted(() => {
    resetTime()
})

defineExpose<CountDownExpose>({
    start,
    pause,
    reset: resetTime,
})
</script>

<style lang="scss" scoped>
@import './index.scss';
</style>
